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Tank empty or tank vent blocked |
Fill tank/bleed system, check tank vent |
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Air
in fuel system |
Bleed fuel system, eliminate air leaks |
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Shut off/start device defective |
Repair or replace |
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Fuel filter blocked |
Replace fuel filter |
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Injection lines blocked/restricted |
Drill to nominal I.D. or replace |
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Fuel supply lines blocked/restricted |
Test all fuel lines -- flush or replace |
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Loose connections, injection lines leak or broken |
Tighten the connection, eliminate the leak |
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Paraffin deposit in fuel filter |
Replace filter, use winter fuel |
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Pump-to-engine timing incorrect |
Readjust timing |
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Injection nozzle defective |
Repair or replace |
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Engine air filter blocked |
Replace air filter element |
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Pre-heating system defective |
Test the glow plugs, replace as necessary |
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Injection sequence does not correspond to firing order |
Install fuel injection lines in the correct order |
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Low
idle misadjusted |
Readjust idle stop screw |
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Maximum speed misadjusted |
Readjust maximum speed screw |
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Overflow valve defective or blocked |
Clean the orifice or replace fitting |
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Delivery valve leakage |
Replace delivery valve (max. of 1 on 4 cyl., 2 on 6 cyl.) |
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Bumper spring misadjusted (RS...governors) |
Readjust bumper spring |
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Timing device defective |
Repair or replace timing device |
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Low
or uneven engine compression |
Repair as necessary |
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Governor misadjusted or defective |
Readjust or repair |
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Fuel injection pump defective or cannot be adjusted |
Remove pump and service |
